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Two sides of a square lie on the lines `x+y=1a n dx+y+2=0.`What is its area? |
Answer» Clearly, the length of the side of the square is equal to the distance between the parallel lines. `x+y-1=0 " " (1)` `" and " x+y+2=0 " " (2)` Hence, side length `=(|2-(-1)|)/(sqrt((1+1))) = (3)/(sqrt(2))` Therefore, area of square `=(9)/(2)` sq. units. |
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